
An explicit stabilization satisfying (REF ) was introduced in [1]}
and analyzed in [2]}, and reads
\(S^{K}_{\operatorname{edge}}(\mathbf {E}_{h},\mathbf {F}_{h}) :=h_K^2\sum _{F\in \mathcal {F}^{K}_{h}}\sum _{e\in \mathcal {E}^{F}_{h}}(\mathbf {E}_{h}\cdot \mathbf {t}_{e},\mathbf {F}_{h}\cdot \mathbf {t}_{e})_{e}\quad \quad \forall \mathbf {E}_{h},\,\mathbf {F}_{h}\in \mathbf {V}_{h}^{\operatorname{edge}}(K).\) 
